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单词 Ångström compensation pyrheliometer
释义 Ångström compensation pyrheliometer
[`ȯŋ·strǝm käm·pǝn`sā·shǝn ¦pīr´hē´lē`äm·ǝd·ǝr]
ENGINEERING
A pyrheliometer consisting of two identical Manganin strips, one shaded, the other exposed to sunlight; an electrical current is passed through the shaded strip to raise its temperature to that of the exposed strip, and the electric power required to accomplish this is a measure of the solar radiation.
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